---
title: AddIn.CLSID Property (Excel)
keywords: vbaxl10.chm185083
f1_keywords:
- vbaxl10.chm185083
ms.prod: excel
api_name:
- Excel.AddIn.CLSID
ms.assetid: 3a8e7eeb-29f8-b05e-e0f8-9ee69a88356c
ms.date: 06/08/2017
---


# AddIn.CLSID Property (Excel)

Returns a read-only unique identifier, or CLSID, identifying an object, as a  **String** .


## Syntax

 _expression_ . **CLSID**

 _expression_ A variable that represents an **AddIn** object.


## See also


#### Concepts


[AddIn Object](addin-object-excel.md)

